eGroupWare is a Multi-user, web-based groupware suite developed on a custom set of PHP-based APIs. Currently available modules include: email, addressbook, calendar, infolog (notes, to-do s, phone calls), content management, forum, bookmarks, wiki
This the specification of the Enterprise JavaBeansTM architecture.The Enterprise JavaBeans
architecture is a component architecture for the development and deployment of componentbased
distributed business applications. Applications written using the Enterprise JavaBeans
architecture are scalable, transactional, and Multi-user secure. These applications may be written
once, and then deployed on any server platform that supports the Enterprise JavaBeans
specification.
Anyone who interacts with today s modern databases needs to know SQL (Structured Query Language), the standard language for generating, manipulating, and retrieving database information. In recent years, the dramatic rise in the popularity of relational databases and Multi-user databases has fueled a healthy demand for application developers and others who can write SQL code efficiently and correctly.
基于OFDM的無線寬帶系統仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell Multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
In this book, we study the interference cancellation and detection problem in
multiantenna Multi-user scenario using precoders. The goal is to utilize multiple
antennas to cancel the interference without sacrificing the diversity or the com-
plexity of the system.
When we started thinking about writing the first edition of this book a few years ago, we had been
working together for more than five years on the borderline between propagation and signal processing.
Therefore, it is not surprising that this book deals with propagation models and design tools for MIMO
wireless communications. Yet, this book should constitute more than a simple combination of these
two domains. It hopefully conveys our integrated understanding of MIMO, which results from endless
controversial discussions on various multi-antenna related issues, as well as various interactions with
numerous colleagues. Obviously, this area of technology is so large that it is beyond our aim to cover all
aspects in details. Rather, our goal is to provide researchers, R&D engineers and graduate students with
a comprehensive coverage of radio propagation models and space–time signal processing techniques
for multi-antenna, Multi-user and multi-cell networks.
This book emphasis on Multi-user MIMO communication.
It covers a collection of the major topics and issues
in Multi-user MIMO systems.
Recent Trends in Multi-user MIMO Communications provides
a tutorial overview of the latest technologies and
research keys related to Multi-user communication.
